Even if it were not an ethical issue (heck, strict Jains and Fruitarians might have even the typical vegetarian/vegan beat there ) it will become an economic and ecological issues soon, if it isn't already. Meat consumption can also be a health issue, the Standard America Diet has too much meats and processed grains and not enough vegetables and fruit.

Will this food be appropriate for our closest most common companion animals, which are obligate or scavenging carnivores? It sounds like it, since they are growing meat, though carnivores may need it specially made. IIRC Cats specifically need taurine in their diet.

Rules for surviving an Autocracy:

Rule#1: Believe the Autocrat.
Rule#2: Do not be taken in by small signs of normality.
Rule#3: Institutions will not save you.
Rule#4: Be outraged.
Rule#5: Don't make compromises.
Rule#6: Remember the future.
- Masha Gessen
Source: http://www2.nybooks....r-survival.html

Chicken, turkey, pork plants are all bloody inhumane. The sooner they go the better.

Are you talking about terminating the ecosystem?
You can't kill off any one species and expect to keep everything ticking along as usual.
Everything is dependent on each other, except humans.

Being at the top of the food chain has it's down side.

As for lab invented protein?
Our bodies will take at least a century to recognize it as real food and store it as fat until it can figure out what to do with it.
Just like it does synthetic sweetener, and most GMO products.